Related Clues:

• Shoe part
• It may be underfoot
• Boot segment
• It's underfoot
• Podiatrist's recommendation, perhaps
• Bass liner
• Sneaker insert
• Comfy part of a shoe
• Arched shoe part
• Victor's shout, 'Wicket out!' -- upon which, it's best to walk
• Funny one-liners in part of Oxford, say